Here are the instructions to use MSB repository through slackpkg+
1. Download and install slackpkg+ package from http://slakfinder.org/slackpkg+/
2. Add msb on REPOPLUS line so that it will become like this
REPOPLUS=( slackpkgplus alienbob restricted slacky msb )
You may remove other repositories (except slackpkgplus) if you don't use it
3. Add msb repository information and match it with your Slackware and
MSB version, and your architecture
Example:
For Slackware 14.2 (32 bit) and MATE 1.18:
MIRRORPLUS['msb']=http://slackware.uk/msb/14.2/latest/x86/
For Slackware 14.2 (64 bit) and MATE 1.18:
MIRRORPLUS['msb']=http://slackware.uk/msb/14.2/latest/x86_64/
4. Run slackpkg update gpg && slackpkg update
5. You can start managing your MSB packages through slackpkg+